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Dairy Cattle And Reproduction

Subjects : industries, dairy
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. (switzerland) 2nd in size and milk production - most muscle -






2. Can survive ~7 days in cow. vast majority <48 hours






3. 16-20 hours






4. Completes uterine growth initiated by estrogen and prepares the uterus for nourishment of developing embryo if pregnancy occurs - supports pregnancy by maintaining quiescent state of reproductive tract and suppresses mating behavior - prevents ovulat






5. When are dairy cattle dehorned?






6. Why does estrus happen before ovulation?






7. (male) definition: duct located outside of the testes. 3 parts: head - body - tail. 4 Functions:concentrate sperm - store sperm - transport sperm - site of sperm maturation. entire process takes ~40-60 days






8. Larger the cow - more milk is produced; smaller the cow - less milk is produced






9. Cleans and lubricates the urethra. secretion is thick - viscous - and very slippery.

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10. 30 hours after estrus begins






11. 1. bring in new genes - 2. replace males with leg problems (difficulty breeding) Note: culling has a much greater emphasis in the dairy industry vs the beef industry.






12. 1. need to be restricted in amt of grain - 2. no more than 70% of ration can be concentrates. 3. *Acidic acid has to be produced in order for milk synthesis to occur (30% forages)






13. Head - neck - mid-piece - tail. genetic material - has an enzyme covering that allows it to penetrate the egg






14. What about the sperm for a bull which has been castrated but still has testicles?






15. Actual heat cycle (period)






16. Look for infection - split - and rupture of the penis






17. 10-37 (21) days






18. 1-2 days






19. 1. brain function - 2. blood flow - 3. willing female






20. 30 hours after estrus begins






21. Knife-loose ~1wk of growth. band-loose ~2wks of growth.






22. (LH) causes female's egg to break (her period)






23. Milk is 15% ________ and 85% __________.






24. (male) definition: duct located outside of the testes. 3 parts: head - body - tail. 4 Functions:concentrate sperm - store sperm - transport sperm - site of sperm maturation. entire process takes ~40-60 days






25. Way to know everything is alright with the breeding male






26. Serves as a bone cradle for the reproductive system. used greatly in palpation as a 'landmark'.






27. Days which have decreasing daylight hours

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28. Indicator of sperm production. the bigger the scrotal circumference the bigger volume of sperm because more seminal vesicles available to produce the sperm






29. Microscopic - make sure not sterile - very few bulls are actually tested






30. 283 days






31. 1-2 days






32. Look for infection - split - and rupture of the penis






33. The more stressed out the male is - the less sperm he is going to produce






34. 147 days






35. Not under a timeline - cow can not be sold as steak






36. 4-6 days






37. Castration tool which clamps down on the vans deferens. causes the sperm to not reach the penis to be ejaculated






38. Pulls sperm and egg together - gets body ready for pregnany - stimulates growth cells - develops mammary glands - starts to deposit fat.






39. Birthing process (termination of gestation)






40. 14-19 (17) days






41. Male on one pin and female on other side






42. 1. sperm is not implanted in egg until hours after breeding. 2. fetal growth has not yet finished.






43. Gonadotropic (GnRH) is (FSH and LH). Follical Stimulating (FSH) and Lutinizing Hormone (LH).






44. Standing to be mounted (last one able to notice); mounting other animals; social behavior-restless - gregarious - activity - vocalizing; frequent urination; mucous discharge






45. Gonadotropic (GnRH) is (FSH and LH). Follical Stimulating (FSH) and Lutinizing Hormone (LH).






46. 1. visual evaluation - 2. scrotal circumference - 3. penis and prepuce observation - 4. rectal palpation - 5. libido test - 6. semen evaluation






47. Animals which have many estrous periods per year (ex: cow - sow)






48. Days which have increasing daylight hours

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49. FEED






50. Allows extension of penis without fibro-elastic penis







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